Voted one of the "Seven Wonders of Chicago," the Willis Tower (formerly the Sears Tower) is among the tallest buildings in the western hemisphere. On your next visit to Chicago, head to the 103rd floor of this famed building and explore all that the Skydeck Chicago observatory has to offer.

Enjoy 360-degree panoramic views from 1,353 feet in the air, marvel at the impressive Chicago skyline, and see all the important landmarks from Soldier Field to the Navy Pier Ferris wheel. You can even see parts of four states at once!

If you’ve ever seen Chicago on a map, you’ll know that the size of this city is nothing to be scoffed at, with dozens of neighborhoods and suburbs stretching for miles and miles. From atop the Skydeck you can see the whole sprawling metropolis and several miles out in each direction, so a visit here makes for great photo opportunities.

Be sure to take a step out onto “The Ledge,” an awe-inspiring, all-glass balcony that extends four feet outside the building’s edge. Are you brave enough for this exhilarating experience? Take a photo of yourself “floating” above the city of Chicago and amaze your friends back home!